Aripiprazole (Abilify) Has Been Called a Third-Generation Antipsychotic

Aripiprazole (Abilify) has been called a third-generation antipsychotic.What is a major difference in its pharmacological profile from that of 1^st and 2^nd generation antipsychotic drugs?

A) Abilify blocks 5-HT2A receptors, whereas 1st and 2^nd generation antipsychotic drugs act as agonists at 5-HT2A receptors
B) Abilify blocks dopamine D2 receptors, whereas 1^st and 2^nd generation antipsychotic drugs act as agonists at dopamine D2 receptors
C) Abilify is a partial agonist at dopamine D2 receptors, whereas 1^st and 2^nd generation antipsychotic drugs act as antagonists or inverse agonists at dopamine D2 receptors